November 27, 2011 AT 10:50 pm

‘Most Beautiful Woman’ By Day, Inventor By Night…

At the height of her Hollywood career, actress Hedy Lamarr was known as “the most beautiful woman in the world.” For most of her life, her legacy was her looks.

But in the 1940s — in an attempt to help the war effort — she quietly invented what would become the precursor to many wireless technologies we use today, including Bluetooth, GPS, cellphone networks and more.

Thanks for sharing this. I had no idea she was responsible for frequency hopping. It’s something used extensively on one of the Radars I work on, and it’s cool to get a better understanding of where the idea originated.